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Metalliferous mining practice; theories of bolting; length of bolts; bolting with timber; use to strengthen corners and brows of shaft; strengthening roof in wide openings.
Metalliferous mining practice; theories of bolting; length of bolts; bolting with timber; use to strengthen corners and brows of shaft; strengthening roof in wide openings.
Roof bolting in Australian metal mines
Min J
Hill, A.H. (author)
Mining Journal ; 240
1953
2 pages
Article (Journal)
English
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